Mottled Duck, Anas fulvigula

This species, found along the Gulf and southern Atlantic coasts of the US, is like the American Black Duck in that both sexes roughly resemble the female Mallard;
they differ in having somewhat warmer brown chevrons in the body
feathers, and unstriped buff rather than lightly striped colder gray on
the throat and head. As with the Mallard, the male's bill is solid
yellow while the females is orange and black.